Shimonoseki Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Shimonoseki.
Climate overview of Shimonoseki
Shimonoseki, Yamaguchi, Japan, experiences significant temperature variation throughout the year. Summers bring daytime highs of 30°C (86°F) in August, while winters cool to 10°C (50°F) in January.
Rainfall is high, totalling around 1817 mm (72 in) per year. June is the wettest month and December the driest. The city also experiences very warm summers and cold winters. The most sunshine falls in May, with an average of 6.9 hours of daily sunshine.
Shimonoseki Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Shimonoseki - and find the best time to visit.
Monthly Temperature in Shimonoseki
Depending on the time of the year, temperatures range from very warm to chilly in Shimonoseki. Average maximum daytime temperatures range from a very warm 30°C (86°F) in August, the warmest time of the year, to a chilly 10°C (50°F) during cooler months like January.
At night, you can expect temperatures ranging from 26°C (79°F) in August to around 6°C (43°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Shimonoseki
Shimonoseki has a relatively rainy climate with high precipitation levels, averaging 1817 mm (72 in) of rainfall annually. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, June it receives heavy rainfall, averaging 289 mm (11 in) of precipitation, recorded across 18 rainy days. In contrast, the driest month December brings less rainfall, with 92 mm (3.6 in) over 21 rainy days. For more details, please visit our Shimonoseki Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Shimonoseki
Seasonal changes in sunshine hours are quite dramatic in Shimonoseki. While May receives considerable daily sunshine with up to 6.9 hours, January marks the darkest time of the year, where sunshine is scarce with only 3.5 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Best Time to Visit Shimonoseki
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May, September, October and November
- Warmest weather: July and August
- Most sunshine: May and August
- Fewer rainy days: April, May, August, October and November
- Wettest months: April, May, June and July, when rainfall is highest.
- Seasonal pattern: Very warm summers and cold winters
Frequently asked questions about the climate in Shimonoseki
What is the best time to visit Shimonoseki?
May, September, October and November typically offer the most optimal weather in Shimonoseki. In contrast, January, February and June tend to have less optimal conditions. Shimonoseki has very warm summers and cold winters.
What temperatures can I expect in Shimonoseki?
Daytime highs range from 10°C (50°F) in January to 30°C (86°F) in August. Nighttime lows range from 6°C (43°F) to 26°C (79°F). Temperatures vary considerably through the year.
How much rain does Shimonoseki get?
Annual rainfall is around 1817 mm (72 in). June is the wettest month with 289 mm (11 in), while December is the driest with 92 mm (3.6 in).
How sunny is Shimonoseki?
Shimonoseki receives around 1,856 hours of sunshine per year. May is the sunniest month with 207 hours, while January is the cloudiest with just 104 hours.
Shimonoseki 3-Day Forecast
Shimonoseki on the map
Shimonoseki is highlighted - select any city to see its climate.
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